/Engine/Plugins/Runtime/nDisplay/Source/DisplayCluster/Public/Render/Projection/IDisplayClusterProjectionPolicy.h
Return true, if camera projection visible for this viewport geometry ICVFX Performance : if camera frame not visible on this node, disable render for this camera
virtual bool IsCameraProjectionVisible ( const FRotator & InViewRotation, const FVector & InViewLocation, const FMatrix & InProjectionMatrix )